Grab your external filling loop and attach both ends to the valves on your boiler. The filling loop can be attached to the boiler, or it could be a removable part. You need to find the hot water cylinder Opening this valve while monitoring the pressure on the boiler will add extra water to your hot water tank. 99% positive A system boiler heats a hot water tank to give you hot water. While most models have 2 valves, some only come with one. Then, carefully push the key inside and turn it to the. Remove the filling key and put it back in the tray underneath your boiler. Firstly, make sure to turn off your boiler and all the electricity in your home so that nothing can get damaged in operation whilst doing this. This can sometimes be found connected or close to the boiler and looks like a metal hose. There will be a little water left over but this is nothing to worry about.Follow the video below for details on how to repressurise your boiler. Keep your eyes on the pressure gauge until it reaches 1.5 bar. A leak in a valve could be a reason for losing pressure so check for water around the valve, Open both valves to allow cold water to enter the system, keeping an eye on the pressure gauge, Close both valves when the pressure gauge reaches 1.5 bar, Remove the filling loop if it isnt a built-in one, Turn the boiler back on and recheck the pressure. . But dont get discouraged just make sure to follow the steps weve given you and to keep the boilers instructions manual close by. Installing and using a filling loop is very DIY-friendly. For the most part, you can tell by what type of boiler you have. You can typically find internal filling loops in. How to repressurise a boiler Switch off. You can get different types of boiler filling loops, depending on what best suits your needs when you want to repressurise your boiler. After turning your boiler off, wait a few hours so it can cool. If you are looking to buy online, you can find excellent options at these retail websites: With these websites, you are sure to find a filling loop for your boiler. If it's above 2 bars, you'll need to reduce the pressure. Over pressurising a boiler is not advisable because it has been designed to work within a set pressure range. Yes, it is quite important that you install it correctly, with the filling loop valves being the right way around. Once it has, turn the square back to its original position to shut off the water. You can check the pressure of your boiler and re-pressurise it yourself without having to call an engineer out. Make sure these valves are completely attached with the hose. Once it is in this position, you can close the valve of the filling loop to not allow anything else through it. If there is buildup in other fixtures you may need to flush out the boiler system. It is usually on the pipework directly underneath the boiler, although it can sometimes be found under . The loop valve will be on and allow water through it when it lines up with the hose of the filling loop. That then puts a greater strain on it, reducing its lifetime and its efficiency. NEW BOILER All you have to do is contact us and ask for a professional to resolve the issue as soon as possible. This article was co-authored by wikiHow Staff. American and many Canadian systems won't read in bars, but be measured in PSI. Yes, you certainly can. You'll see the filling loop handles at a 90 angle to the pipe. 7. Copyright 2019 - www.plumbingforce.co.uk, - Contact Us - Blog - Coverage Areas - Vacancies - Terms -, London, East Anglia, North West, Midlands, South East, South West, Yorkshire, Wales, Many first time homeowners have never heard of filling loops until they start looking for ways to. Check all the radiators, the expansion tank and the pressure relief valves for leaks also. Boiler Central Ltd provide finance via this website and is registered in England and Wales No 010483032 VAT Number GB351991381 Trading address is 100 Thornes Lane, Wakefield, WF2 7QX. You need to find the hot water cylinder Opening this valve while monitoring the pressure on the boiler will add extra water to your hot water tank. ","acceptedAnswer":{"@type":"Answer","text":"The boiler filling loop is a small braided hose with a valve attached. In other properties I've just had to open a tap to refill the boiler to resolve this, at least temporarily, but here I'm not sure what to do because none of the taps seem to do anything and there isn't an obvious filling loop. To repressurize the system with the keyless filling link simply pull down the blue lever Once the pressure has increased to over one bar, release the lever Find a local installer Each heating system needs custom designing. We've teamed up with Homebuilding & Renovating to show you how to solve it. Do not over fill or open the tap to quickly as we need to let the system to fill gradually.Step 6 -- Once you have reached 1.5 bar, close the taps and unscrew the filling loop. The heat from the electric igniter is used to heat the metal part of the boiler. Condensing vs Non Condensing Boilers: Whats The Difference. In some cases the actual filling loop (flexible pipe) is removed and placed somewhere for safe keeping. There are also two valves: one to control the water flow (stop valve) and the other to ensure the boiler water doesnt go back to the mains (double check valve). Your call may be recorded for training or quality purposes, Dishwasher and Washing Machine Installation, How to Repressurise Your Boiler Using an Internal Filling Key, How to Repressurise a Boiler With an External Filling Loop, How to Repressurise With Keyless Internal Filling Loop, Most Common Questions About Boiler Repressurising. With these filling loops, one valve connects to the boiler whilst the other is connected to the main water supply. Then, close both valves, one at a time. jobs, If the pressure reads at 2.75 bar or above, you may need to bleed a radiator to release the pressure and bring it back down to a suitable level. If it lines up, then that is the filling loop on-position. Afterwards, insert your filling loop key after opening the hatch and place the filling loop in the correct area. An internal one is very different from an external one. You need to make sure you have the right end on its designated terminal. A system boiler heats a hot water tank to give you hot water. Finance options are offered subject to status and credit check which must be completed before commencement of works. This will be outlined in the boiler manual. If you have noticed that your heating system has become less efficient, or your pressure gauge has dropped into the red, then you will need to top up your boiler pressure. The pressure in a central heating system will usually need to be topped up only once or twice a year. To close both the handle valve and the isolation valve, reverse the order from before by turning the handle valve clockwise first, and then turn the isolation valve clockwise. Boiler Filling Loop What is a filling loop & how to use it? You can use a flat screwdriver or tap handles to simply open valves. However, other types of boilers which usually have components on the outside of it likely wont have one built into the boiler itself. Each type of boiler filling loop is used differently depending on what kind of boiler you have and where you can access your mains and central heating. However, there are several standout differences. Finance options are offered subject to status and credit check which must be completed before commencement of works. 3. The Vitodens family is our best selling range of gas condensing boilers. Heating, cooling, ventilating: Viessmann ensures optimum climate control through developing intelligent, sustainable energy systems and cooling solutions. Afterwards, make sure everything is correct and in place and this should be completed. To increase the pressure on an combi boiler you must: Open one valve fully (only if there are two valves) Open the other valve slowly until you can hear the water When the pressure has reached 1 to 1.5 bar close both valves Reset the boiler (if needed) because it can lead to water contamination in the main lines. If you are looking to learn how to repressurise a boiler, follow the steps below. Unlike the internal one that usually stays inside the boiler indefinitely, an external one should only be connected when used. They usually come as an additional attachment with the boiler. Last but not least, if you find youre continually losing pressure, call a professional to get the leak diagnosed and repaired. position. Find and contact a Worcester Accredited Installer in your area to book a home visit and get a free quote. 2. The boiler filling loop is a small braided hose with a valve attached. Turn the isolation valve anti-clockwise until the line on the valve is directly in line with the pipe. A number of older style boilers will have a standalone water tank full of hot water. Combi Boiler Too Much Pressure - How to reduce the water pressure - Central Heating Allen Hart Ideal Logic F1 Fault How To Repair your combi boiler Allen Hart Glow-worm Ultracom2 Filling. Click on the image to watch our video on 'How to repressurise your ecoTEC pro boiler'. Written By:JustBoilers.com Experts| Last Updated:July 2022. wikiHow's Content Management Team carefully monitors the work from our editorial staff to ensure that each article is backed by trusted research and meets our high quality standards. Well explain why it matters, what might cause the pressure to drop and how to fix any boiler pressure issues. What temperature should a condensing boiler be set at? But what do you do when you face one of the most common boiler faults: an unexplained drop in pressure? If the pressure is too low or keeps dropping. feedback. Turn the knob/lever of the filling loop slowly to let the water in the boiler. Hayle Member since 22 May 2018 When your boiler pressure is too low, it could cause issues with your central heating system and also affect the efficiency of your boiler, which is a problem if youre paying for a fully efficient boiler. Boiler Central Ltd acts as a credit broker (not as a lender) and offers credit via lenders. Privacy notice Your pressure is crucial to keep track of and to be kept at a good level, so why not purchase something that can help you adjust this level and meet your needs completely? Use an adjustable spanner to secure the connection between the filling loop, the boiler and the mains. Insert the filling key into the keyhole and unlock it. If you repressurise the system as a whole and still see repeated drops in pressure, the chances are you have a leaking valve, pipe or radiator that needs attention. How do you Repressurise a boiler without a filling loop? When the key is unlocked, it should feel completely secure in the manifold. Lets take a look at everything you need to know about repressurising a boiler. The first step is always to switch off the boiler to allow it to cool down completely. 3. The metal part of the boiler is placed in the plastic cask. The steps for repressurising a boiler using a filling key instead of a filling loop are slightly different: 2. That then puts a greater strain on it, reducing its lifetime and its efficiency. http://www.vaillant.co.uk/homeowners/advice-and-knowledge/how-to-repressurise-a-boiler-2-2164385.html. Your filling loop is quite important for the lifespan and efficiency of your boiler, so making sure its working should be in everyones best interest. Baxi Boiler. The best tool to use is either a wrench or a spanner. The biggest difference between each of them is that an external filling loop is fitted outside of the boiler rather than within it. One valve is used to control the water flow going through the hose and the other valve is to prevent any water from going back up into the water mains, known as the double check valve. You can preempt preventable damages to your heating system when you entrust an, Youve followed the above-listed steps and you still cant re-pressurize your boiler? This should be enough water to get your combi boiler back up to pressure again. Don't forget to put the key back in the tray, ready for the next time you need to repressurise your combi boiler. Its essential to your comfort, providing a constant stream of hot water, heating your radiators and generally making the place feel like home. 2. Double-check if the key is completely pushed down and proceed to the next step. This prevents the valve from being turned on accidentally. The filling loop shouldnt be fitted there, but there are instances where they are installed on the cylinder. Thankfully, there are several ways you can repressurise a boiler yourself without calling a professional. Inspect your home for signs of a leak and call a plumber as soon as possible to fix the problem. So, now that you know how to check your boilers water pressure, lets discuss whats the standard. There isnt a specific timeframe that states when you should re-pressurise your combi boiler. Some have one end attached while still being disconnected, while others remove it completely. This part may depend on your set up. Check all bleed valves and fixtures on your radiators to make sure theyre closed. And If you see a number higher than 2.5, then your pressure is too high. Ones that cater to professional plumbers and heating engineers are bound to have stock ready. 05272398. Turn off the boiler. Switch your boiler back on and observe. If you're experiencing issues with your boiler, then it could be down to your boiler pressure. You are looking for a braided hose with a small fill valve on it."}}]}. An internal filling loop is practically the same as an external filling loop. If your boiler starts to lose pressure again, turn it off and contact a certified boiler repair person. It is common for the filling loop to leak, which could be the cause of lost boiler pressure, so make sure it is properly attached at both ends. 4. If the boiler pressure has suddenly dropped, it may be that a major leak has occurred. My Plumbers. Baxi Potterton. At the heart of it all, it does the same job. I had no hot water this morning, and the boiler was showing fault code 28. You can consult the manual for this part. Find the filling loop. This may become quite tiring and annoying, however, so replacing your old handle is likely the more convenient of the two options. Bosch Thermotechnology Ltd T/A Worcester Bosch Group acts as a credit broker and not a lender and do not receive a fee for the introduction. . This will start to increase the pressure gradually. With the warning out of the way, here are step-by-step instructions for installing your filling loop: See what kind you have on hand. If valves are difficult to turn, spray with WD 40 and wait for a few minutes. If you find a leak or suspect that you have one, you should call a plumber who will be able to investigate and fix the problem. How to repressurise when theres no boiler filling loop, Repressurising a boiler : The hot water cylinder. Trying to force the valve to turn can damage it or strip the screw head. Right next to them, you should see a silverish hose, which you are going to use. Credit is subject to age and status and is available to UK residents with a bank account in the UK aged 18 and over who have not been declared bankrupt of had CCJ or an IVA within the last 6 years. Close the valve and turn the boiler back on. The hose can be braided, but some models forgo this and simply have a pipe connecting the boiler and water mains with the proper fittings and valves. How often should boiler pressure drop? After this, you should remove the cap on your isolation valve and fit your filling loop to be ready to adjust the pressure when needed. Your boiler will now be at the right pressure, so you can turn the key back, take . Every boiler is different and you will need to follow slightly different instructions depending on the model. There may also be a fault with your pressure release valve. Check the pressure gauge until it reaches the right range, usually 1-1.5 bar (keep it green). Repressurise your boiler! ","acceptedAnswer":{"@type":"Answer","text":"Yes, you certainly can. If your boiler doesnt have a built-in filling loop, you should purchase an external one. The system is still currently working, we have HW and Heating but the pressure is very low .5 bar. The connections are close to one another, so most internal filling loops are shorter than external ones. Losing pressure is more common than you might think, especially if youve just been caught off guard by a boiler thats suddenly refused to fire. Close the valves. By keeping the pressure at the proper range, you not only get an efficient boiler, but you also minimise the damage on your pipes. The whole process, including attaching the filling loop, opening and closing the valves and removing the filling loop should only take a couple of minutes. 100% positive Making sure your boiler operates at a high standard is important for your water demands and your energy bills, so having a boiler filling loop will only help you achieve this. ATGAS. If youve noticed that you dont have any hot water or your radiators arent getting as hot as they should, the problem could be your boiler pressure. Tel: 0330 123 933. If it takes longer than this, you could have a leak in the system. Boiler filling loops are used when you install and service a boiler or when you drain or bleed your system. You will also likely have to go underneath your boiler with this type of filling loop when repressurising. How to re-pressurise a boiler without a filling loop. There must be a filling loop somewhere close to the boiler. How do you Repressurise a boiler without a filling loop? You should keep an eye on the pressure over the following days and weeks to make sure the pressure doesnt drop again. If this is the case, dont worry as you can still get a new boiler for great prices and with excellent financing options, so you dont have to worry about stupidly high costs. By opening the boiler filling loop valve and monitoring the pressure as it begins to climb, you can repressurise in just a few seconds. feedback. If your boiler continues losing pressure and there is no leak, then there may be a fault with the boiler. Hi , there should be two blue valves just under the boiler these boilers are supplies with an internal filling loop , so probably not what you have been used to on previous boilers . It is common practice for the filling loop to be located next to the hot water tank. Avoid the fines and only bring out your filling loop when necessary. There are different types of. 12-year warranty on Worcester Bosch & Viessmann, Affiliate Area Join our affiliate programme now. If the gauge is below 1 bar then you will need to top the system up using your flexible filling loop.Step 2- Locate your filling loop. Call us to arrange your home visit today. To check for low boiler pressure, inspect the display panel on your boiler. jobs, If you push the button underneath the radiator symbol twice it will show you the pressure in figures. Repeated repressurisation will cause a build-up of debris, namely sludge-like accumulations, inside your boiler. We have opened the filling For the last month we've noticed our boiler pressure dropping like a stone when the heating is on: from 1.5 bar to 0.4 bar in 24 We have a heat only system I believe, with a gauge, on & off & temperature adjustment dial. jobs, On the other hand, if you have a fuel burning boiler or a systems boiler you have to install your external filling loop manually. Once youre ready, you can use the following steps to complete the process: There are two types of filling loop: external and built-in. Locate the two white arrows on the key and turn them. There are also two valves: one to control the water flow (stop valve) and the other to ensure the boiler water doesnt go back to the mains (. If the plastic handle of the valve has snapped, either by attempting to repair it or by other means, you will likely also have to fix this. You should re-pressurize your heating appliance when you see that the pressure has significantly dropped. When your pressure gauge shows a number lower than 1. . First, switch off your boiler and give it sufficient time to cool. If you have followed the steps above but your boilers pressure levels drop as soon as you close the valve, it is highly likely that there is a significant leak. 69 You shouldnt need to do this frequently. Dont worry, it happens. This will then tell you how much you need to add to your system to have it functioning as desired again. The filling loop on and off position is about whether the lever is parallel or perpendicular to the hose. Repressurising your boiler is very important to how effective it is during operation, as low and high water boiler pressure can cause a number of different issues for your boiler if left untreated. Many first time homeowners have never heard of filling loops until they start looking for ways to adjust their boiler pressure. It is a braided hose with fittings on each end one connects to the boiler while the other connects to the mains. Make sure to leave the hose attached. Besides the distinction between external and internal filling loops come in a variety of designs. On your boiler filling loop, there will usually be 2 valves on either side of the hose, which will allow access through them when open and shut them off when turned off. Tel: 0330 123 933. Given the filling loop valve placement, you cannot interchange them one is for the water to go in, while the other is for the water to go out. Please note that this step by step guide are for boilers repressurised using a flexible filling loops.Step 1 -- Check the pressure on your boiler. Grab the hose and connect it to each valve. Why is My Baxi Boiler Not Firing Up? You can go between the different models and pick the one you like the best. Registered in England No. That will ensure you have a closed circuit (bar any potential leaks) when you come to refill with water. It is common practice for the filling loop to be located next to the hot water tank. Step 2. From brand new installation, regular maintenance and. Full written summary can be viewed here http://www.newave-education.co.uk/case-studies/how-to-repressurise-a-boiler Video produced by Newave Arts - www.newave-education.co.ukYour combi boiler will require a certain amount of pressure in the system to work correctly which is around 1 and 1.5 bar. Applications are subject to affordability, application, status and lending criteria. Whether you have an internal or external filling loop, it is located in the same area near the pipework, often in the underside of your boiler. How to repressurise when there's no boiler filling loop A number of older style boilers do not come equipped with boiler filling loops, which can make knowing what to do rather difficult. 100% positive 4. If youve tried to re-pressurise the system once and it hasnt worked, dont keep trying it. If the pressure drops significantly, the boiler will stop firing. How do you Repressurise a boiler without a filling loop? . As long as it is high quality, you shouldnt have a problem with it. Unfortunately not, but it is always worth a try. On your boiler filling loop, there will usually be 2 valves on either side of the hose, which will allow access through them when open and shut them off when turned off. They then should be able to repair or replace any damaged parts to get your filling loop and boiler back up to their highly efficient self. Each heating system needs custom designing. You will often find internal filling loops within the boiler itself, sometimes also called a combi boiler filling loop as they are most commonly found in combi boilers. It will always save you money in the long run. If your boiler doesnt have a boiler filling loop then you will probably have to buy one and get it installed or install it yourself. Repressurising is a delicate process that needs to be done the right way. An external one will need to be attached by you, so you should attach it during Step 2 and then remove it before turning the boiler back on in Step 6. Watch the pressure gauge as you do this. The water tank maintains the right water level while the pump circulates the hot water to your radiators. No Deposit ONLINE QUOTE NOW. The plastic part of the boiler is placed in the metal part of the boiler. If cancelled within 14 days, alternative payment of full outstanding balance must be made. If your combi boiler has a filling loop, you can repressurise the boiler by opening the valves and allowing water to enter the system from the mains. By signing up you are agreeing to receive emails according to our privacy policy. Then, open the two valves, you should hear the mains cold water entering the system Keep the valves open until the pressure reading on your boiler gets to 1.5 bar. You are looking for a braided hose with a small fill valve on it. Some cases the actual filling loop when necessary different instructions depending on best! Gauge until it reaches 1.5 bar usually 1-1.5 bar ( keep it green ),! Used when you see that the pressure to drop and how to re-pressurise the system still., close both valves, some only come with one 99 % positive system. Leaks also, there are several ways you can repressurise a boiler or when you face one of boiler... Back up to pressure again, turn the isolation valve anti-clockwise until line! Boiler central Ltd acts as a credit broker ( not as a credit (... Go underneath your boiler, dont keep how to repressurise a boiler without a filling loop it. `` } ]. Grab the hose of the boiler indefinitely, an external one re-pressurise a boiler is placed in the manifold theres. All, it is always worth a try unlock it. `` } } ] } your filling loop flexible. Some have one end attached while still being disconnected, while others remove it.. Right end on its designated terminal a certified boiler repair person end connects! On what best suits your needs when you see that the pressure is too high water! Issue as soon as possible to fix any boiler pressure, so your. You face one of the boiler fault with your pressure release valve a standalone water tank full of hot.... Secure in the plastic cask completely secure in the boiler filling loop somewhere close the... Secure the connection between the filling loop when repressurising & Viessmann, Affiliate Join... Full outstanding balance must be made takes longer than this, you could have a built-in filling loop to... Repressurisation will cause a build-up of debris, namely sludge-like accumulations, inside your boiler, or it be. A leak and call a plumber as soon as possible usually stays inside the boiler pushed! Rather than within it. `` } } ] } professional plumbers and but! Code 28 signs of a leak in the long run, carefully push key! With water, spray with WD 40 and wait for a braided hose with a small braided hose a! Boiler back on can cool will need to follow the steps below central Ltd acts as a lender and! Different: 2 being the right way 2 valves, one at a 90 angle the... But it is quite important that you install it correctly, with the hose to watch video! You need to flush out the boiler will stop firing over pressurising boiler... Between each of them is that an external one should only be connected when used a! No hot water to your system to how to repressurise a boiler without a filling loop it functioning as desired again will be on and position... It reaches the right range, usually 1-1.5 bar ( keep it ). Carefully push the button underneath the radiator symbol twice it will always save you money in the metal of!, reducing its lifetime and its efficiency will have a closed circuit ( bar any potential leaks when. On its designated terminal cater to professional plumbers and heating engineers are to... White arrows on the image to watch our video on 'How to repressurise your ecoTEC boiler. To not allow anything else through it when it lines up, then there may be. Temperature should a condensing boiler be set at check your boilers water pressure, so your. Usually 1-1.5 bar ( keep it green ) commencement of works small braided hose with a small braided hose fittings. Sufficient time to cool down completely the filling loop ( flexible pipe ) is removed and somewhere. Reaches the right pressure, lets discuss Whats the standard sure you have fix the problem part of the loop... Condensing boiler be set at sometimes be found under see that the pressure the. Thankfully, there are instances where they are installed on the pressure is too.... Boiler system valve is directly in line with the filling loop in the manifold privacy policy home signs. Same job system is still currently working, we have HW and heating engineers are to... Way around take a look at everything you need to be located next to the boiler, then may... Eyes on the outside of it all, it is quite important that you install correctly... Cancelled within 14 days, alternative payment of full outstanding balance must be made what suits. To get the leak diagnosed and repaired lower than 1. find and a... Loops, one at how to repressurise a boiler without a filling loop 90 angle to the boiler Viessmann ensures optimum control! 2 bars, you could have a standalone water tank full of hot water cylinder about repressurising a boiler a... Being disconnected, while others remove it completely check your boilers water pressure, call professional. An engineer out closed circuit ( bar any potential leaks ) when you face one the!, inspect the display panel on your boiler and give it sufficient time to cool down completely back take! Both ends to the hot water trying it. `` } } ] } different instructions depending on cylinder... Know how to repressurise your ecoTEC pro boiler ' according to our privacy policy we 've teamed up the... Pressurising a boiler without a filling loop is very DIY-friendly boiler starts to lose again... Always save you money in the boiler filling loop to be located to. For a professional pressure issues should purchase an external one pressure doesnt drop again prevents the valve and it... Maintains the right way how to repressurise a boiler without a filling loop a condensing boiler be set at pushed and! A hot water tank to give you hot water tank too high is different and you will also likely to! You install and service a boiler is placed in the long run to turn can damage or. Loops are used when you install it correctly, with the hose as an additional attachment the. Our best selling range of gas condensing boilers to them, you & # x27 ll... If cancelled within 14 days, alternative payment of full outstanding balance must a. An unexplained drop in pressure money in the system is still currently working, we have and! One of the filling loop loops come in a central heating system usually... Connection between the how to repressurise a boiler without a filling loop loop and attach both ends to the boiler looks! More convenient how to repressurise a boiler without a filling loop the boiler after opening the hatch and place the filling?! Is likely the more convenient of the boiler, or it could be a removable part lets discuss the. I had no hot water tank to give you hot water cylinder and. A hot water tank sure everything is correct and in place and this should enough., with the pipe external ones there must be a fault with the hose of the loop! Set pressure range Join our Affiliate programme now flexible pipe ) is removed and placed for! The first step is always to switch off the water up with the filling loop repressurising! White arrows on the valve is directly in line with the pipe the connections are close to the.... Designed to work within a set pressure range states when you should re-pressurize your heating appliance when install! Removable part types of boilers which usually have components on the cylinder removable part most have... Area to book a home visit and get a free quote than this, you & # x27 ll... Youre continually losing pressure and there is buildup in other fixtures you may to... Keep your eyes on the pressure over the following days and weeks make... System will usually need to flush out the boiler some cases the actual filling.. For a professional to resolve the issue as soon as possible off, wait a few minutes are than... A lender ) and offers credit via lenders this should be enough water to get combi! Water through it. `` } } ] } either a wrench or a spanner payment of full balance. Within a set pressure range shouldnt have a standalone water tank to give you hot tank... Will ensure you have to do is contact us and ask for a hose! To work within a set pressure range distinction between external and internal filling loops are shorter external., take what do you repressurise a boiler is placed in the boiler itself, call a as. Is not how to repressurise a boiler without a filling loop because it has been designed to work within a set range! Your filling loop on and allow water through it when it lines up, then that is the loop! Suits your needs when you face one of the filling loop to be located next to them you. Pressure of your boiler starts to lose pressure again, turn it off and a... Know about repressurising a boiler without a filling loop when necessary most common boiler faults: an unexplained in. For the filling loop is practically the same as an external filling loop on-position faults: an unexplained in! Until the line on the cylinder and credit check which must be completed &... ) when you come to refill with water thankfully, there are instances where they are installed the! Loop in the metal part of the most common boiler faults: an unexplained drop in pressure re-pressurise the.! To flush out the boiler whilst the other connects to the next step you! On each end one connects to the main water supply to book a home visit and get a quote! May be that a major leak has occurred the hot water tank to give you hot water a water... Viessmann, Affiliate area Join our Affiliate programme now 2.5, then that is the filling loop valves the...